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In this engineering design challenge, learners animate a facial expression and make a machine (zoetrope) that plays the animation back.

In this activity, learners build a figure that moves and "comes to life" when they pull its string.

In this environmental health activity, learners investigate their breathing and pulse rates, and learn how these measurements are affected by physical activity.

In this activity, learners investigate color vision as well as plan and conduct their own experiments.

In this activity, learners act as epidemiologists by mapping the prevalence of HIV/AIDS worldwide.

In this activity, learners construct a device that allows them to view 2-D images in 3-D.

In this activity, learners take measurements and create charts to learn about the size of dinosaurs and their relative scale to humans.

In this open-ended multicultural lab activity, learners investigate the effectiveness of herbal remedies.